MY136364A - Reducing interference in a gsm communication system - Google Patents

Reducing interference in a gsm communication system

Info

Publication number
MY136364A
MY136364A MYPI20040470A MYPI20040470A MY136364A MY 136364 A MY136364 A MY 136364A MY PI20040470 A MYPI20040470 A MY PI20040470A MY PI20040470 A MYPI20040470 A MY PI20040470A MY 136364 A MY136364 A MY 136364A
Authority
MY
Malaysia
Prior art keywords
burst
communication system
data
impulse
finite
Prior art date
Application number
MYPI20040470A
Inventor
Michael Buckley
Raja S Bachu
Kenneth A Stewart
Clint S Wilkins
Original Assignee
Motorola Mobility Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola Mobility Inc filed Critical Motorola Mobility Inc
Publication of MY136364A publication Critical patent/MY136364A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/024—Channel estimation channel estimation algorithms
    • H04L25/0242—Channel estimation channel estimation algorithms using matrix methods
    • H04L25/0244—Channel estimation channel estimation algorithms using matrix methods with inversion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2003—Modulator circuits; Transmitter circuits for continuous phase modulation
    • H04L27/2007—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained
    • H04L27/2017—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained in which the phase changes are non-linear, e.g. generalized and Gaussian minimum shift keying, tamed frequency modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03375—Passband transmission
    • H04L2025/03401—PSK
    • H04L2025/03407—Continuous phase
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03375—Passband transmission
    • H04L2025/03414—Multicarrier

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Mathematical Physics (AREA)
  • Nonlinear Science (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Noise Elimination (AREA)

Abstract

A METHOD FOR REDUCING INTERFERENCE IN A DESIRED SIGNAL IN A GSM COMMUNICATION SYSTEM USES A FINITE-IMPULSE-RESPONSE FILTER FOR ALTERNATE LINEAR EQUALIZATION. THE METHOD INCLUDES A FIRST STEP (300) OF INPUTTING A BURST OF DATA OF A RECEIVED WAVEFORM INCLUDING INTERFERENCE FROM A CHANNEL OF THE COMMUNICATION SYSTEM. A NEXT STEP (302) INCLUDES TRAINING THE FINITE-IMPULSE-RESPONSE FILTER WITH A SET OF SYMBOLS OF SPECIFIC QUADRATURE PHASE, KNOWN A PRIORI, IN THE BURST OF DATA OF THE RECEIVED WAVEFORM. FOR EXAMPLE KNOWN REAL ONLY AND IMAGINARY ONLY SYMBOLS ARE ALTERNATIVELY SELECTED FROM A MIDAMBLE OF THE DATA BURST.A NEXT STEP (304) INCLUDES OPERATING ON THE RECEIVED WAVEFORM WITH THE FINITE-IMPULSE-RESPONSE FILTER TO ALTERNATELY LINEARLY EQUALIZE THE BURST OF DATA TO PROVIDE AN ESTIMATE OF THE DESIRED SIGNAL.
MYPI20040470A 2003-02-13 2004-02-13 Reducing interference in a gsm communication system MY136364A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/366,106 US7187736B2 (en) 2003-02-13 2003-02-13 Reducing interference in a GSM communication system

Publications (1)

Publication Number Publication Date
MY136364A true MY136364A (en) 2008-09-30

Family

ID=32849700

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI20040470A MY136364A (en) 2003-02-13 2004-02-13 Reducing interference in a gsm communication system

Country Status (3)

Country Link
US (2) US7187736B2 (en)
MY (1) MY136364A (en)
WO (1) WO2004073185A2 (en)

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US20070110135A1 (en) * 2005-11-15 2007-05-17 Tommy Guess Iterative interference cancellation for MIMO-OFDM receivers
US7623602B2 (en) * 2005-11-15 2009-11-24 Tensorcomm, Inc. Iterative interference canceller for wireless multiple-access systems employing closed loop transmit diversity
US7764798B1 (en) * 2006-07-21 2010-07-27 Cingular Wireless Ii, Llc Radio frequency interference reduction in connection with mobile phones
US20100046660A1 (en) * 2008-05-13 2010-02-25 Qualcomm Incorporated Interference cancellation under non-stationary conditions
US9408165B2 (en) * 2008-06-09 2016-08-02 Qualcomm Incorporated Increasing capacity in wireless communications
US9237515B2 (en) * 2008-08-01 2016-01-12 Qualcomm Incorporated Successive detection and cancellation for cell pilot detection
US9277487B2 (en) * 2008-08-01 2016-03-01 Qualcomm Incorporated Cell detection with interference cancellation
US8509293B2 (en) 2008-08-19 2013-08-13 Qualcomm Incorporated Semi-coherent timing propagation for GERAN multislot configurations
US8503591B2 (en) 2008-08-19 2013-08-06 Qualcomm Incorporated Enhanced geran receiver using channel input beamforming
US20100097955A1 (en) * 2008-10-16 2010-04-22 Qualcomm Incorporated Rate determination
CN101494874B (en) * 2009-03-03 2011-03-16 华为终端有限公司 Method and device for estimating TOA
US9160577B2 (en) * 2009-04-30 2015-10-13 Qualcomm Incorporated Hybrid SAIC receiver
US8787509B2 (en) * 2009-06-04 2014-07-22 Qualcomm Incorporated Iterative interference cancellation receiver
US8831149B2 (en) * 2009-09-03 2014-09-09 Qualcomm Incorporated Symbol estimation methods and apparatuses
US8619928B2 (en) * 2009-09-03 2013-12-31 Qualcomm Incorporated Multi-stage interference suppression
JP6091895B2 (en) 2009-11-27 2017-03-08 クゥアルコム・インコーポレイテッドＱｕａｌｃｏｍｍ Ｉｎｃｏｒｐｏｒａｔｅｄ Increased capacity in wireless communications
KR101363016B1 (en) 2009-11-27 2014-02-13 퀄컴 인코포레이티드 Increasing capacity in wireless communications
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Also Published As

Publication number Publication date
US20040161063A1 (en) 2004-08-19
US20040161065A1 (en) 2004-08-19
WO2004073185A2 (en) 2004-08-26
US7471749B2 (en) 2008-12-30
WO2004073185A3 (en) 2004-12-23
US7187736B2 (en) 2007-03-06

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